chore: update Docker version information in PR body (#1626)

Author: gounthar

.github/workflows/github-docker-registry-push.yml

@@ -76,13 +76,16 @@ jobs:
               # Create PR with explicit title and body instead of --fill
               gh pr create \
                 --title "chore: update Docker versions" \
-                --body "Automated update of docker-versions.txt with current Docker and Docker Compose versions.
+                --body "$(cat <<'EOF'
+Automated update of docker-versions.txt with current Docker and Docker Compose versions.
 
 **Changes:**
 - Updated Docker version information
 - Updated Docker Compose version information
 
-This PR only contains changes to \`docker-versions.txt\` and no other files." \
+This PR only contains changes to \`docker-versions.txt\` and no other files.
+EOF
+)" \
                 --base main \
                 --head "$BRANCH_NAME"
             fi